仿抖音短视频源码开启双目摄像头实时预览
紧接着在对应的类中实现SurfaceHolder.Callback接口,并重写surfaceCreated、surfaceChanged、surfaceDestroyed方法。
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public class CameraTestActivity extends Activity implements SurfaceHolder.Callback{ public Button mButton; private Camera mCamera1,mCamera2; private SurfaceView surfaceView1,surfaceView2; private SurfaceHolder mSurfaceHolder,mSurfaceHolder2; private int cameraId = 1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_camera); this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED); initView(); initView2(); initButton(); } //视图初始化(摄像头1) private void initView() { surfaceView1 = findViewById(R.id.surfaceView1);//获得SurfaceView的实例 mSurfaceHolder = surfaceView1.getHolder();//获得SurfaceView的Holder mSurfaceHolder.addCallback(this);//设置Holder的回调 } //视图初始化(摄像头2) private void initView2(){ surfaceView2 = findViewById(R.id.surfaceView2);//获得SurfaceView的实例 mSurfaceHolder2 = surfaceView2.getHolder();//获得SurfaceView的Holder mSurfaceHolder2.addCallback(this);//设置Holder的回调 } //打开照相机1 public void CameraOpen() { try { //打开摄像机1 mCamera1 = Camera.open(cameraId); mCamera1.setDisplayOrientation(270); //绑定Surface并开启预览 mCamera1.setPreviewDisplay(mSurfaceHolder); mCamera1.startPreview(); } catch (IOException e) { mCamera1.release(); mCamera1 = null; Toast.makeText(CameraTestActivity.this, "surface created failed", Toast.LENGTH_SHORT).show(); } } //打开照相机2 public void CameraOpen2() { try { //打开摄像机2 mCamera2 = Camera.open(cameraId - 1); mCamera2.setDisplayOrientation(270); //绑定Surface并开启预览 mCamera2.setPreviewDisplay(mSurfaceHolder2); mCamera2.startPreview(); } catch (IOException e) { mCamera2.release(); mCamera2 = null; Toast.makeText(CameraTestActivity.this, "surface created failed", Toast.LENGTH_SHORT).show(); } } //回调初始化 private void initButton() { //返回上个界面的按钮 mButton = findViewById(R.id.button2); mButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent intent = new Intent(CameraTestActivity.this,MainActivity.class); startActivity(intent); } }); } @Override public void surfaceCreated(SurfaceHolder surfaceHolder) { //检查权限 if (ContextCompat.checkSelfPermission(CameraTestActivity.this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { } else { CameraOpen(); CameraOpen2(); } } @Override public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) { Camera.Parameters parameters = mCamera1.getParameters(); mCamera1.setParameters(parameters); mCamera1.startPreview(); Camera.Parameters parameters2 = mCamera2.getParameters(); mCamera2.setParameters(parameters2); mCamera2.startPreview(); } @Override public void surfaceDestroyed(SurfaceHolder surfaceHolder) { mCamera1.stopPreview(); mCamera1.release(); mCamera1 = null; mCamera2.stopPreview(); mCamera2.release(); mCamera2 = null; } }
记得别忘了在AndroidMainfest.xml中开启权限了
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